Lens polisher



H. W. HILL LENS POLISHE R Filed April 10, 1922 F/GI INVENTOR f'iWH/LL.

ATTORNEYS adhesive,

Patented Apr. 17, 1928.-

HARRY W. HILL,

OF SOUTHBBIDGE, MASSACHUSETTS, ASSIGNOR '10 AMERICAN OFTI- CAL COMPANY, OF SOUTHBRIDGE, MASSAC HUSETTS, A VOLUNTARY ASSOCIATION OLE MASSACHUSETTS.

LENS romsnrm.

Application filed April 10, 1922. Serial No. 551,137.

This invention relates to new and useful improvements in polishers, and more particularly to a polisher especially adapted for iliie in polishing ophthalmic lenses, and the The main object of the invention is the provision of a polisher comprising a fabric base impregnated with a lens polishing material and attaching adhesive permanently united with one face of the polisher whereby the polisher may be quickly and readily at-- tached to a lens polishing machine.

Another object of the invention is the provision of a polisher for lenses consisting of a fabric base having one face thereof impregnated with suitable abrasive material and the other face provided with an attaching both faces of-the polisher being embraced with a suitable protector which will adhere to the faces and which can be readily removed prior to using the polisher. A further object of the invention is the provision of a polisher comprising a reticulated fabric base impregnated upon one face thereof with a pliable substance together with an abrasive material and a suitable preservative for the pliable substance, and applying a suitable adhesive to the other face of the fabric, and a fabric protecting sheet applied to both faces ofthe polisher and adapted to be removed prior to usingthe polisher.

Other-objects and advantages of my improved construction should be readily apparent by reference to the following specification taken'in connection with the accompanying drawings, and it will be understood that I may make any modifications in the specific details of construction shown and described within the scope of the appended claim without departing from or exceeding the spirit of my invention.

Figure I is a top plan view of a polisher constructed in accordance with my invention. Figure II is a longitudinal sectional view of the same.

.Fi ure III is a similar view showing the application of the protecting fabric.

Fig. 4 is a view similar to Fig. II but on an enlarged scale.

Fig. 5 is a view similar to Fig. III but on an enlarged scale, showing the protective covering for the polisher.

In carrying out my invention I have enpolisher comprising a fabric base having one face thereof impregnated with a suitable waxy substance with abrasive material pressed into this substance and the other face of the polisher provided with .a suitable 'ad hesive whereby the polisher can be readily attached to any well known make of lens polishing machine.

In the accompanying drawings the numetal 1 indicates the. fabric body, and I wish it to be understood that this body can be made from any reticulated fabric, and particularly fabric wherein the warp and woof threads are of the same size and stripe woven tightly together so as to provide a resistance against strainupon the fabric in any direction to thus provide a wearing surface which which is well known in the lens polishing I art. In order to provide for a suitable preservative to retain the waxy substance in proper condition at all times, I mix with the wax or pliable substan'ceta proper amount of methyl salicylate. This material is more commonly known as oil of Wintergreen,

which, when added to a waxy substance, as

in the present case, acts as a preservative by preventing'fungus growth. Also, it renders the waxy substance more suitable for the purpose by making it less brittle and more pliable, whereby it will quite easily conform to the shape of the lens being operated upon,

' and will also hold the abrasive better. In

addition to the above or in place thereof may be added a phenolithic compound which wil produce a substantial amount of toughening to the pliable substance so that when the abrasive material is pressed into a waxy or pliable substance it will readily adhere to the same.

In order to provide means whereby the polisher can be quickly and readily attached to a lens polishing machine, I impregnate the other face of the polisher with a suitable adhesive material, preferably an adhesive material which is insoluble in water, as a certain amount of water is used during the process of polishing ophthalmic lenses and the like.

- This adhesive may be gum dammar, rosin, or 4 any other suitable adhesive well known in the art. I a

In forming my improved pohsher I prefer to use, as set forth above, a fabric wherein the warp and woof threads are arranged close together and even in weight throughe out, and if found desirable the material can be of light or attractive colors. In 1mpreg-' nating'the material the wax or other pliable substance which may be used is pressed into the fabric in a semi-molten condition, and if 1 found convenient the polishing or abrasive material can be intermixed with the pliable material and the fabric impregnated with the various materials ina mixed state, al-

though various ways and means can be em ployed for applying the various materials to the fabric.

both faces of the polisher, that is, to protect the polishing face against gathering dirt particles, and also to prevent the adhesive side from sticking to an adjacent polisher, I

prefer .to cover both faces of the polisher with a fabric material, preferably a close woven material, said fabric being applied to ranged upon .the opposite face of the polisher while the same is in a heated or sticky condition so that the fabric will.

readily'adhere to both faces of the polisher,

this protective fabric will remain .on the pohshers untilathey are ready foruse, andwhen ready for use the fabric can be loosened .in any suitable manner at one edge and then readily removed from both faces of the polisher.

In the drawings, in which I have endeavored to illustrate theinvention, the wax and abrasive material is indicated at 2, arranged 11 on one face of the olisher and the adheslve'material indicate at Zis art e ol- :isher. The numeral 4 designates the fa ric protecting cover which is a'pplied to the faces of the polisher, as set forth above.

While I have shownand described the preferred manner in which my improved polisher is formed, I wish it to' be understood that various types of materials may be used and various kinds ofwaxy substances im- In order to form a suitable protection forpregnated with an abrasive material can be applied to one face of the base of the polisher, while any suitable type of adhesive can be applied to the other side of the base, although it is preferred to have a type of adhesive which is insoluble in water.

It is further to be understood that the fabric covering 4 preferably serves a double purpose .in that it both protects the surface or surfaces of the polisher member, and also .serves to designate the particular grade or q I type of polisher and the manufacturer there- I i finishing work, and in addition the. device is shown as provided'with the three-letters A O C arranged in the form of a monogram forming the trade-mark of the manufacturerproducing the article. These designations may be either merelyimprinted upon the covering material 4, or may be printed and embossed thereon after the material is applied to the polisher, in which event the polishing surface itself will be in-- dented, as indicated at 6 in Figure III, these indentations removing a portion of the absolute center of the polisher and forming on its face ribs or indentations into which the fluid used in polishing fits, andfromwhich it works out between the polisher and material being polished so that these designations have the additional advantage of forming fluid receiving recesses in the face of the polisher, facilitating the actual polishing operation. a

I claim:

As a new article of manufacture, a b'ack- 'ing provided with a coating of a mixture of beeswax, methyl salicylate and a phenol substance, and an abrasive embedded in the mixture.

v HARRY w. HILL, 

